Did I do a good thing or not?

I never cared for Shures. You might.

Hey Dan when you get the cartridge give it a listen then come back and tell us. 😉

I still use one of those I bought new way back when and also have the original stylus plus an album that came with it. Can't remember what was on that album but one of these days I'll dig it to find out. I do remember it had a pic of a tonearm with the Shure cartridge in it.

I don't get why you would ask AFTER having made the purchase.  You will be the first to know whether you made a good move, once you have auditioned the cartridge.  Like "secretguy" said, I too never thought the V15 series were  much better than OK.  But it was a phase that everyone went through in the 70s and 80s.

Depends on what you used before the Shure.